切换到另一个 Redis 实例？

[Vencent (Vencent S)]

My Discourse instance formerly used a shared Redis instance with other applications. Now I want to make Discourse use its own Redis instance. Can I just edit YML configuration, bootstrap new image, restart the container and find out everything is fine?

I get the following error when bootstrapping the new image:

I, [2019-09-09T16:58:33.448153 #1]  INFO -- : > cd /var/www/discourse && su discourse -c 'bundle exec rake db:migrate'
rake aborted!
Redis::CannotConnectError: Error connecting to Redis on 172.16.255.89:6379 (Redis::TimeoutError)
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:344:in `rescue in establish_connection'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:328:in `establish_connection'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:99:in `block in connect'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:291:in `with_reconnect'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:98:in `connect'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:363:in `ensure_connected'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:219:in `block in process'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:304:in `logging'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:218:in `process'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:118:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis.rb:523:in `block in del'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis.rb:45:in `block in synchronize'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis.rb:45:in `synchronize'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis.rb:522:in `del'
/var/www/discourse/lib/discourse_redis.rb:220:in `block in del'
/var/www/discourse/lib/discourse_redis.rb:173:in `ignore_readonly'
/var/www/discourse/lib/discourse_redis.rb:218:in `del'
/var/www/discourse/lib/cache.rb:59:in `delete_entry'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/cache.rb:457:in `block in delete'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/cache.rb:663:in `block in instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/notifications.rb:170:in `instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/cache.rb:663:in `instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/cache.rb:456:in `delete'
/var/www/discourse/lib/site_setting_extension.rb:424:in `clear_cache!'
/var/www/discourse/lib/site_setting_extension.rb:300:in `block in refresh!'
/var/www/discourse/lib/site_setting_extension.rb:279:in `synchronize'
/var/www/discourse/lib/site_setting_extension.rb:279:in `refresh!'
/var/www/discourse/lib/site_setting_extension.rb:484:in `block in setup_methods'
/var/www/discourse/config/initializers/004-message_bus.rb:120:in `<top (required)>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:285:in `load'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:285:in `block in load'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:285:in `load'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/engine.rb:657:in `block in load_config_initializer'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/notifications.rb:170:in `instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/engine.rb:656:in `load_config_initializer'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/engine.rb:614:in `block (2 levels) in <class:Engine>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/engine.rb:613:in `each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/engine.rb:613:in `block in <class:Engine>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/initializable.rb:32:in `instance_exec'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/initializable.rb:32:in `run'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/initializable.rb:61:in `block in run_initializers'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/initializable.rb:50:in `each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/initializable.rb:50:in `tsort_each_child'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/initializable.rb:60:in `run_initializers'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/application.rb:361:in `initialize!'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/railtie.rb:190:in `public_send'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/railtie.rb:190:in `method_missing'
/var/www/discourse/config/environment.rb:7:in `<top (required)>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `block in require'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/application.rb:337:in `require_environment!'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/application.rb:520:in `block in run_tasks_blocks'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/exe/rake:27:in `<top (required)>'
/usr/local/bin/bundle:23:in `load'
/usr/local/bin/bundle:23:in `<main>'

Caused by:
Redis::TimeoutError: Redis::TimeoutError
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/connection/hiredis.rb:26:in `rescue in connect'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/connection/hiredis.rb:10:in `connect'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:334:in `establish_connection'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:99:in `block in connect'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:291:in `with_reconnect'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:98:in `connect'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:363:in `ensure_connected'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:219:in `block in process'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:304:in `logging'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:218:in `process'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:118:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis.rb:523:in `block in del'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis.rb:45:in `block in synchronize'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis.rb:45:in `synchronize'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis.rb:522:in `del'
/var/www/discourse/lib/discourse_redis.rb:220:in `block in del'
/var/www/discourse/lib/discourse_redis.rb:173:in `ignore_readonly'
/var/www/discourse/lib/discourse_redis.rb:218:in `del'
/var/www/discourse/lib/cache.rb:59:in `delete_entry'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/cache.rb:457:in `block in delete'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/cache.rb:663:in `block in instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/notifications.rb:170:in `instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/cache.rb:663:in `instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/cache.rb:456:in `delete'
/var/www/discourse/lib/site_setting_extension.rb:424:in `clear_cache!'
/var/www/discourse/lib/site_setting_extension.rb:300:in `block in refresh!'
/var/www/discourse/lib/site_setting_extension.rb:279:in `synchronize'
/var/www/discourse/lib/site_setting_extension.rb:279:in `refresh!'
/var/www/discourse/lib/site_setting_extension.rb:484:in `block in setup_methods'
/var/www/discourse/config/initializers/004-message_bus.rb:120:in `<top (required)>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:285:in `load'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:285:in `block in load'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:285:in `load'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/engine.rb:657:in `block in load_config_initializer'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/notifications.rb:170:in `instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/engine.rb:656:in `load_config_initializer'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/engine.rb:614:in `block (2 levels) in <class:Engine>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/engine.rb:613:in `each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/engine.rb:613:in `block in <class:Engine>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/initializable.rb:32:in `instance_exec'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/initializable.rb:32:in `run'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/initializable.rb:61:in `block in run_initializers'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/initializable.rb:50:in `each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/initializable.rb:50:in `tsort_each_child'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/initializable.rb:60:in `run_initializers'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/application.rb:361:in `initialize!'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/railtie.rb:190:in `public_send'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/railtie.rb:190:in `method_missing'
/var/www/discourse/config/environment.rb:7:in `<top (required)>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `block in require'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/application.rb:337:in `require_environment!'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/application.rb:520:in `block in run_tasks_blocks'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/exe/rake:27:in `<top (required)>'
/usr/local/bin/bundle:23:in `load'
/usr/local/bin/bundle:23:in `<main>'

Caused by:
Errno::ETIMEDOUT: Connection timed out
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/connection/hiredis.rb:19:in `connect'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/connection/hiredis.rb:19:in `connect'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:334:in `establish_connection'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:99:in `block in connect'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:291:in `with_reconnect'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:98:in `connect'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:363:in `ensure_connected'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:219:in `block in process'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:304:in `logging'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:218:in `process'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis/client.rb:118:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis.rb:523:in `block in del'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis.rb:45:in `block in synchronize'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis.rb:45:in `synchronize'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.0.1/lib/redis.rb:522:in `del'
/var/www/discourse/lib/discourse_redis.rb:220:in `block in del'
/var/www/discourse/lib/discourse_redis.rb:173:in `ignore_readonly'
/var/www/discourse/lib/discourse_redis.rb:218:in `del'
/var/www/discourse/lib/cache.rb:59:in `delete_entry'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/cache.rb:457:in `block in delete'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/cache.rb:663:in `block in instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/notifications.rb:170:in `instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/cache.rb:663:in `instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/cache.rb:456:in `delete'
/var/www/discourse/lib/site_setting_extension.rb:424:in `clear_cache!'
/var/www/discourse/lib/site_setting_extension.rb:300:in `block in refresh!'
/var/www/discourse/lib/site_setting_extension.rb:279:in `synchronize'
/var/www/discourse/lib/site_setting_extension.rb:279:in `refresh!'
/var/www/discourse/lib/site_setting_extension.rb:484:in `block in setup_methods'
/var/www/discourse/config/initializers/004-message_bus.rb:120:in `<top (required)>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:285:in `load'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:285:in `block in load'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:285:in `load'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/engine.rb:657:in `block in load_config_initializer'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/notifications.rb:170:in `instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/engine.rb:656:in `load_config_initializer'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/engine.rb:614:in `block (2 levels) in <class:Engine>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/engine.rb:613:in `each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/engine.rb:613:in `block in <class:Engine>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/initializable.rb:32:in `instance_exec'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/initializable.rb:32:in `run'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/initializable.rb:61:in `block in run_initializers'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/initializable.rb:50:in `each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/initializable.rb:50:in `tsort_each_child'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/initializable.rb:60:in `run_initializers'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/application.rb:361:in `initialize!'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/railtie.rb:190:in `public_send'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/railtie.rb:190:in `method_missing'
/var/www/discourse/config/environment.rb:7:in `<top (required)>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `block in require'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/application.rb:337:in `require_environment!'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/application.rb:520:in `block in run_tasks_blocks'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/exe/rake:27:in `<top (required)>'
/usr/local/bin/bundle:23:in `load'
/usr/local/bin/bundle:23:in `<main>'
Tasks: TOP => db:migrate => db:load_config => environment
(See full trace by running task with --trace)
I, [2019-09-09T16:58:49.923376 #1]  INFO -- :


FAILED
--------------------
Pups::ExecError: cd /var/www/discourse && su discourse -c 'bundle exec rake db:migrate' failed with return #<Process::Status: pid 208 exit 1>
Location of failure: /pups/lib/pups/exec_command.rb:112:in `spawn'
exec failed with the params {"cd"=>"$home", "hook"=>"db_migrate", "cmd"=>["su discourse -c 'bundle exec rake db:migrate'"]}
5b808f4c1f3da6f04f86c6ff78cd81984c9595c6bdb87fb2a72cc2ea28b615e8
** FAILED TO BOOTSTRAP ** please scroll up and look for earlier error messages, there may be more than one.
./discourse-doctor may help diagnose the problem.

I’m not sure if it’s needed to migrate data from old Redis instance to make work.

[Falco]

@Vencent

在引导新镜像时，我收到以下错误：

Error connecting to Redis on 172.16.255.89:6379

请确保容器能够访问该 IP 地址。

@Vencent

我不确定是否需要将数据从旧的 Redis 实例迁移过来才能正常工作。

无需这样做。

[Vencent (Vencent S)]

@Falco

请确保容器能够访问该 IP。

看来普通容器（而非 Kubernetes Pod）无法连接到 Kubernetes 的 ClusterIP。我尝试在 Redis 容器中使用 redis-cli 连接新的 Redis 实例，但失败了。不过，我可以在宿主机上连接到该 Redis 实例。在 Kubernetes 环境中，推荐的构建方式是什么？

[Falco]

@Vencent

在 Kubernetes 环境中推荐的构建方式是什么？

我们提供了连接到应用容器外部数据库的标准方法，例如 Configure Discourse to use a separate PostgreSQL server

我们已经在 discourse/docs/INSTALL-cloud.md at main · discourse/discourse · GitHub 上为所有人提供了极其简单的安装方案，该方案已稳定运行并支撑了互联网上数千个实例。遗憾的是，选择自行探索其他路径的用户将需自行承担相应后果，因为我们无法为所有可能的组合提供支持。

[Vencent (Vencent S)]

对于遇到同样问题的人，我最终使用了 ./launcher bootstrap web_only --docker-args "--network=host" 来解决。看来 Kubernetes 节点的主机可以连接到 ClusterIP，而普通的 Docker 容器（非 Kubernetes Pod）则不行。